Melissa of melissa’s landscaping service mows many of the lawns in her neighborhood for $100 per lawn, per month. she also offers full landscape maintenance services for $130 per yard, per month. if melissa provides full landscaping service for two times the number of yards for which she provides lawn mowing only, and her earnings are $8,280 for a month, for how many yards does melissa provide the full landscape maintenance service? (25 points)